Most if not all high speed ammo shot from a pistol is sub sonic anyway so there is not much sound reduction there. CB ammo is quieter but still noticable due to short pistol barrels and CBs don't feed well in semi-auto pistols. [CBs are pretty quiet in long barreled .22 rifles]. You won't get a really quiet .22 pistol unless you suppress it.

is this custom feature hard to get? does it make it not semiautomatic anymore?

A slide lock renders the pistol a single shot. The only pistol I'm aware of that had a slide lock, in this case called a "Schieber device", incorporated into the design is the HK MK23 "Socom", but it was dropped from the production guns. The excellent suppressor that was mated to this gun proved very quiet.

Quietest ever? I'm not sure which it would be, but I know for certain it is not the P-22 or any semi-auto with or without a slide lock. The longer the barrel, the less heat and noise that reaches the muzzle.

A break open single shot is not as nice as a semi-auto, but it can be much less noisy. Add on the oversized silencer and it makes a difficult combo to beat in the noise or accuracy department.

If you really need a repeater, then this old beat up 1895 Nagant will probably best the P-22 in the accuracy department any day. The target loads move a 93 grain bullet at about 700 fps, about the same power as a 22lr. Full power loads are still subsonic but a bit louder.

I'm kind of partial to the 2213 S&W series myself. The low bore axis means the sights are useable without modification, the smooth slide allows you to put your thumb on the back to hold the slide closed, and the short barrel keeps most things subsonic. Easy to add a barrel nut/ thread adapter, too.

Slide Lock - as noted earlier - locks the slide closed to eliminate action and residual gas noise at ejection. They can be flipped up (in use) or down for normal function. HS and S&W 41s wer modified for US Govt use in the 60s. Possibly some civilian models also??

dang i was hoping for a semiautomatic silenced handgun but i guess thats a stretch

so is there a way to have maybe a non semi automatic gun but that u haveto chamber every time. like for example a semiautomatic gun but that is cocked every time? i know there there is pump .22 rifles which might work good with a silencer? but could the auto loading feature on a handgun be stopped? or is there a handgun that can chamber fast(not bolt or break) but not rely on the blowback system releasing noise and gas?

-would a pump action .22 rifle be real quiet with a silencer?
-can a semiautomatic handgun be modified to not blowback and instead be cocked every time?
-is there a handgun or small rifle that can chamber a load fast (not break action) w/out releasing noise?
-is there any current production revolvers(w/ threaded barrel) that seal between the barrel and chamber?

is there a way to have maybe a non semi automatic gun but that u haveto chamber every time. like for example a semiautomatic gun but that is cocked every time? i know there there is pump .22 rifles which might work good with a silencer? but could the auto loading feature on a handgun be stopped? or is there a handgun that can chamber fast(not bolt or break) but not rely on the blowback system releasing noise and gas?

-would a pump action .22 rifle be real quiet with a silencer?
-can a semiautomatic handgun be modified to not blowback and instead be cocked every time?
-is there a handgun or small rifle that can chamber a load fast (not break action) w/out releasing noise?
-is there any current production revolvers(w/ threaded barrel) that seal between the barrel and chamber?

No... you can have a suppressed semi auto... the loudest thing will be the action working. which depending on the model can be quite silent. you can also install buffers in certain makes to reduce the noise of the slide rebounding. the bolt on a Ruger with a good buffer would seem potentially quieter then a slide to me, anyone agree?
-would a pump action .22 rifle be real quiet with a silencer?why not? your going to make noise pumping it. probably similar to semi action working

-can a semiautomatic handgun be modified to not blowback and instead be cocked every time?
yes... its called a slide lock I think several have replied to your original inquiry.

-is there a handgun or small rifle that can chamber a load fast (not break action) w/out releasing noise?
anytime you have moving parts or loading on a firearm it will make noise. What exactly are you trying to do? your questions are confusing.

-is there any current production revolvers(w/ threaded barrel) that seal between the barrel and chamber?
Not to my knowledge its a complex and unnecessary that requires specially made cartridges . PS you can get any barrel threaded. Just take it to a good smith.

be any quieter than a bolt action rifle that also requires manual recocking/reloading for each shot???

Also, to answer your initial question, years ago I had a Winchester Model 67 single shot .22 rifle that had a 27" barrel and was incredibly quiet with standard velocity long rifles and almost completely silent with shorts. When a short was fired, it sounded about like a small twig being snapped.

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